MASS SPECTROMETER

PROBLEM TO BE SOLVED: To efficiently check and readjust ionizing unit by informing its disordered spots to the user in detail. SOLUTION: A controller 16 turns a switch 14 without lighting a filament 4 and reads trap current Ir and total current It obtained at current/voltage converters 9, 13, respec...

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Bibliographic Details
Main Author TERAKURA IKUTAKE
Format Patent
LanguageEnglish
Published 31.08.2001
Edition7
Subjects
BASIC ELECTRIC ELEMENTS
ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
ELECTRICITY
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
PHYSICS
TESTING
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Summary:PROBLEM TO BE SOLVED: To efficiently check and readjust ionizing unit by informing its disordered spots to the user in detail. SOLUTION: A controller 16 turns a switch 14 without lighting a filament 4 and reads trap current Ir and total current It obtained at current/voltage converters 9, 13, respectively. And a disorder caused by contact of the filament or a trap electrode 6 with an ionization chamber 1 is found out by judging this Ir or It to be zero or greater than zero. When judged normal, the filament 4 is lighted and feedback controlled, and in similar manner to this, by reading the trap current Ir and total current It respectively, a deviation in mounting position of the filament 4 or trap electrode 6 or disorder caused by a broken filament 4 is found out in accordance with the value.
Bibliography:Application Number: JP20000045718